Improvement in pumps



l. DELANEY.

Pumps.

Patentedlan. 13,1874.

UNITED STATES EDWARD J. DELANEY, OF SAN FRANCISCO, CALIFORNIA.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 146,323, datedJanuary13, 1874; application `filed November 28,1873. i

To all whom it may concern:

Be it known that I, EDWARD J. DELANEY, of San Francisco city and county,State of California, have invented a Pump; and I do hereby declare 'thefollowing description and accompanying drawings are sufficient to enableany person skilled in the art or science to which it most nearlyappertains to make and use my said invention without further inventionor experiment.

The object of my invention is to provide an improvement in pumps; and itconsists in a novel arrangement of a hollen7 plunger, which operateswithin the outer case and air-chamber, and fits closely around theinduction-pipe. In connection with this plunger is a novel arrangementof the valves and a ring for holding packing, the whole being morecompletely described in the following specification, in which- Figure 1is a sectional elevation of my pump. Fig. 2 is a perspective view.

A is the air-chalnber of my pump, having a proper stuffing-box at thetop, through which the piston-rod works. The air-chamber is attached tothe hollow stand B, which may be t secured to the base-plate C. Theinductionpipe D is made to lit closely where it passes through thebase-plate, and its upper part is somewhat larger than the lower. Thispartis turned smooth, and has grooves e e made around it, which serve tohold water for packing purposes. The plunger F is a hollow cylinder, andts closely over the upper part of the pipe D, the water between the twoand in the groove serving to make it work tight. The inductionvalve Gris iitted to rise and fall with` in the pipe D, near the top beingsupported upon the seat H, and guided by arms I. 'At the top of the pipeD a ring, J, is screwed on. This ring has a flange, K, which nearlyfills the inside diameter of the plunger. The pipe D is turned somewhatsmaller outside just below its top, and this space allows a packing tobe used and held in `place by the ring. The discharge-valve L is conicalin shape, and fits around the piston M, a collar, N, preventing toogreat a lift. The upper part of the plunger is nished out by the arms O,which extend from its top to the boss or hub I?, into which thepiston-rod is keyed, these arms being inside of the valve. The valvelits closely upon the hub P, and also aroundthe ledge, at r, around thetop ofthe plunger. 'i

The operation will be as follows: The plunger being drawn up, the valveLremains closed,

and a vacuum is produced within the plunger, y

which causes the valve G to open and allow the space to lill with watcr. When the plunger is again depressed, the water will close thelower valve and open the upper one, through which it escapes into theair-chamber.

I do not claim the valve G, as the construction of this valve willbemade the subject of a separate application.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is i l.' The hollow cylindrical plunger l?, incombination with the pipe D, enlarged at the top,

and provided with the grooves e e and the flanged ring J, for thepurpose substantially as herein described. y,

2. In combination with` the hollow plunger Fand internal pipe D, asshown, `the conical valve L above the plunger, and the valve G withinthe pipe, when the whole is constructed to operate substantially asherein described.

In witness whereof Ihereunto set my hand and seal.

EDWARD JOSEPH DELANEY. [L S.]

Witnesses: l

J oIIN L. BOONE, O. MILTON RICHARDSON.

PATENT OFFICE.

